Apparatus for sharpening blades.



R. T. WINN. APIARATUS FOR SHARPENING BLADES APPLICATION FILED MAY 14, 1910.

Patented. Feb. 21, 19111 is made as 1n. a suitable holder which automatically re- 4 novel friction means between the blade- '35 sharpening m m RICHARD T. WINN,

--specification, like characters on the drawing tion will be fully described in the'subjoined specification looking at- Fig; l t

onthe line 3-3, Fig. 1

UNITED STATES PATENT OFFICE.

FACTURING COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION OF -"-TI\TE.

AYPARATUS SHARPENING BLADES.

985 088 Specification of Letters Patent. Patented Feb, 21, 1911, Application filed May 14, 1910. Serial No. 561,274. To all whom it may concern: the actuating means for the sharpening Be itknown that I, RIOHARD T. VV1NN,-a member, and also showing a portion of citizen of the United States, and resident of the lost-motion connectlon prevlously men- Cliftondale, county of Essex, State of Mastioned, Fig. 4.- 1s a detail on the line 4% sachusetts have invented an Improvement *ig. 3 looking toward the 1 ft t b 1n Apparatus for Sl1a1pening Blades, of ferred to; Figs. 5 and 6 are plan views of which the following description, in connecmembers of the friction connection, detion'with the accompanying drawing, is a tached; Fig. 7 is a View in elevation of the novel support for the sharpening member; F1g. 8 is a cross-sectional view of such support and t e sharpening member seated therein; Fig. 9 is an outer face view of one of the members of the lost-motion connection shown in section in Fig. 3; Fig. 10 is a separate edge view of the split annular spring or friction detent for preventing im-- proper movement of the support for the sharpening member; Fig. 11 is a plan View of the blank from which is made one of the retaining caps for the sharpening member; Fig. 12 is a transverse sectional detail on the line 12, Fig. 2, looking toward the left, to be referred to; Fig. 13 is a cross-sectional detail through the center collar of the bladeholder, on the line 13, Fig. 3.

The frame 1 having an attached handle 2 upturned, parallel sides transverse shaft 4 rotatably mounted in the lower portions of the sides and having fixed to one of its projecting ends a disk-like carrepresenting. like parts.

his invention ticularly' designed for sharpening bla safety-razors, whereby such can be easily and properly honed, stropped, or otherwise sharpened, and my present invention has for its object the production of arrangement whereby the operation is imcost of manufacture and assembling reduced.

1e sharpening apparatus in which my present invention is embodied is of the type shown and described in United States Patent No. 908,470, granted January 5, 1909 to J. V. Leslie, wherein the sharpening surface a rotatable cylindrical spiral, with means to rotate it first in one andthen in the other direction, the blade. being held verses the position of the blade to present the opposite faces thereof to the action of t 1e sharpening surface. rubber or other suitable material, are in gen- In my presentinvention I have provided holder and the means for rotating the sharpening member, and I have also provided a novel an-" efficient support for'such member. The lost motion connection between the her and the means for effecting its rotation has also been improved and simplified, as will be explained hereinafter.

The various novel features of my invenas shown inFigs. 2 and c As shown in Fig. 3 the carrier-5 has on its inner face a hub 9 on which is loosely mounted a large gear 10,- and b adiacent faces of soft steel, andby reference to Fig. 3 it will be seen that the inner face of the gear 10 projects beyond the end of the hub 9. The

shaft 4. is reduced in diameter to leave an and particularly pointed out in the following claims Figure 1 is a side elevation 'of abladesharpening apparatus embodying my present invention: Fig, 2 is a front view thereof, 'rom the right hand, and partly broken out; Fig. 3 is an enlarged sectional detail centrally broken out, taken looking toward the ft, showing the friction connection between the bIade hoIderreVersing means and star shaped spring washer 14, made of spring steel. The friction disk 13, made of soft steel, rests against the inner face of "the i Fig. 5, and a to rotate in unison with the shaft and its 2'0 held from rotation.

' all times acts to provide a firm frictional enhearin s in the frame sides 3. -Owin to b b 5 0 omitted in Fig. 3 for the sake of clearness,

will be apparent, may be relatively narrow a a 985,088 a gear 10 while thespring washer 14 rests hereinafter. Both heads .are metal disks, against the shoulder 12 and between it and centrally perforated, as at 20, Fig. 9,"to rethe friction disk, as shown in Fig. 3. I ceive loosely the shaft-4, and said heads are The parts described are made of such dialso circularly recessed on t-he1r'outer fa'ces,

5 mensions that when the carrler 5 is xed on-' the recess in head 16 receiving split and the shaft 4 the shoulder .12 flexes the spring slightly twisted annular spring 21, Figs: 3 1 1 and the friction'di k 13 and clamps them and 10, which surrounds shaft 4 and presses tightly between said shoulder and theend against the inner-face of the adjacent side 1 of the hub 9, to turn therewith, but the pe- 3 of the frame. Said spring serves to press '0 ripheral portion of the disk. 13 bears. fricthe "skeletonsupport yieldin'gly toward the 7 tionally against the inner face of the gear opposite side of the frame, and it also acts 10, thereby forming a' friction connection as a friction detent to prevent improper or between it and theshaft L- Ordinarily this accidental rotation of the skeleton support friction device or connection causes the gear around the shaft. I

The circular recess, in the outer faceof the head 15has forced into it with a driving it a flat disk '22, Figs. 3 and 9, provided with a segmental opening 23, into which enters a radial pin 2i, Fig. 3, fixed in the shaft 4., so that a lost-motion connection is provided v between said shaft. and its attached carriers and the support for the sharpening member, the opening 23 being concentric with the center of the head 15, as shown clearly in I fixedly attached parts, but when the rotative movement of the gear is arrested, as Wlll. be described, the friction' connection permits the shaft'to rotate while the gear is .The wearing washer .11 prevents undue wear between the gear 10and carrier 5 when the former is held from rotation, and the resiliency of the washer-like spring 1 1 at gagement between the gear 10 and the frictioIi member or disk 13, as will be manifest. By providing a large hub' 9 for the gear 10 the latter isfirmly supported and is held 30 in proper position at all times, and it will be seen that the friction connection is operativeat all times and is not interfered with or changed in its action by any slight longitudinal movement of the-shaft 1 in its the aperture 20. As the disk 22 with" its segmental opening 23 is died or stamped out of plate metal, and as the recessed heads 15 and 16 are made in like manner, the con-- struction is very simple and inexpensive,. the head 15 being completed byforcing into its circular recess the disk 22. Heretofore the recess for the pin on the shaft had to be cut with an end 'mill in a solid metal. disk, the operation being slow, laborious and expensive', because of frequent-breakage of the milling tool due to its small size. \Vhen the frame is moved bodily, with the carriers on a flat surface, said carriers and shaft will rotate in thevdirection of such bodily movement and when the pin 24 is at eitherend of the'recess 23 the skeleton-support and thesharpening member 19 thereon will be rotated positively in unison with, the shaft and carriers, and in the same direction.

Referring to Fig. 1, if bodily movement 0 the sharpening apparatus is to the right, the direction of rotation of the carriers, shaft and sharpening member will be as indicated by arrow .100, but if such movement of the such parts being fully shown in Figs; 2 frame bereversedthe rotation of the-carriers and 7.- a and-the shaft 4 will .be reversed, but the The sharpening member, which in pracsharpening member'will not be reversed and ties presents a cylindrical, spiral surface, as again rotated until the shaft has made substantially one-half revolution, and the pin 24 engages. the opp ite end of the segmental j suitable material,which will provide a-sharp recess, 23. Thus tiesharpening member has ening surface, and it is made. thick enough a rest period each time bodily movement'of to project radially beyond the flanges 18, see the apparatus as'a whole is reversed, as in 60 Fig. 8, to. prevent "any contact of the edge the Leslie patent referred to, and herein 1? of the bladetherewithf I. the friction detent 21 actsduring such rest I have devised retaining caps which fit period to prevent any accidental or prema over the heads of the skeleton support, to ture rotation of the sharpening member secure the-ends of the sharpening, member -During the restperiod of the said member 65 inplace, and such; caps will be referred to the position of he blade to besharpencd )8 13 the small scale of F1g.'2 I have not attempted to indicate the parts of the friction convnection, as the same is clearly shown in Fig. 3. I

40 -'-Between the sides 3 I mount loosely upon the shaft 1 two parallel and circular heads 15,.16-connected rigidly by a spiral bar 17 having its outer face channeled to leave parallel edge flanges '18, forming a spiral 45 Seat, in which is cemented or'otherwise secured the sharpening member 19, said heads and the spiral bar connecting them consti'-- tuting a skeleton support-Q The said bar 17 and sharpening member 19 are purposely strip of leather, treated canvas, orxother Fig.1 9, and being cut out to register with 90 cost of manufacture of this adjacent end of the the holder.

ion meshing with the gear 10, so that pinion same direction as said higher speed, the gearing conshaft has loosely mounted upon I but reversely positioned locking disks 29, 30, the elongated hubs thereof being rotatably, extended through the frame sides 3, as t shown in Fig. 3, the outer end of the hub of the disk abutting against and each disk is provided-on its inner face with an annular, inturned lip or flange, said flanges being shown at 29*, 3O in Fig. 3.

The flanges loosely enter notches in the ends of the blade 31, seeFig. 2, as in the Leslie patent referred to, the outer end of the hub of disk 30 hearing against a spring 32 coiled about the shaft 25 and inclcsed within tl a chambered nut 33 tightly screwed onto the t' shaft, so that the disk 30 may be moved. outward away from the disk 29, to receive or release a blade. lVhen the disk 30 released the spring forces it against the end of the blade, and the latter I locked in the holder between the two' flanged disks. substantially as in the patent i above referred to. A tube or sleeve 34'is slipped onto the-shaft 25, one end abutting 0 some looseness of the blade when locked in This tube obviates pinning the disk 29 to the shaft 25, and also obviates the use of a, pin or other'stop to limit inward movement of disk 30, thereby avoiding weakening the shaft, doing away with drilling operations and the fitting of small pins into the shaft, and materially reducing the part of the apparatus. An intermediate collar fixedly held by a set-screw 36, Fig. 13, on the tube or sleeve rt'mi'dway between the locking disks, the set screwpassing through a hole in the action. the shaft or seat- 37 therein for the and said seat is made wide I tipping of frame sides 3 above holder, as provided for in dc to accommodate itself to the .ing

are very readily and quickly the set-screw of l the shaft, and fixedly positioning the collar 35 on the tube, the

ling costs being reduced materially arrangement shown.

\Vhen a blade operator grasps apparatus back the carrier 6 revolvsurface. Initial the pinion 26, sh

4 and in the same direction, so that possible for the sh tate toward the cutting ed TVhen -the blade is b sharpening surface the angul the blad gearing to press surface of the sharpening is rotated. 'jects radially adapt itself to provided for in the Leslie patent.

heads 15 and 16 and sharpening member caps being made lar blan 1 opening 38.

the tube and being set up against 25, said collar having a radial slotbaek of the enough to permit said blade when locked in the 4 the Leslie patent, reasons, viz: to permit the sharpenmenrhe-r. The parts of the blade-holder assembled, and double purpose sleeve tightly 36 serves the iolding the tube or is locked in the holder the the handle Y e sharpens arpening member to roge of the blade.

ar movement of e-holder within the ring-like gear the blade against-the spiral member 19 as Inasmuch as said member p beyond the spiral flanges 18 the skeleton support it is impossible for the edge of the blade being sharpened to contact with such flanges at any time. fit of the back of the blade in the radial seat blade to.

The loose in the collar 35 permits the the s provide thin metal caps to vfit over the retain the endsof the securely in from a substantially circu- Fig. 11, having a large central dottedline 39 9 1ts traversing I de reversal is effected before 1e lost-motion connection acts rought against the is of course arrested, and then hub 9 revolves arpening surface, as-

place, said rapidity.

it is im- The blank is shaped by suitable dies and npturnedalong the 3.

to formaYci'rcular flange 40 which fits over the circumference of each head, the'capibe ing held tightly thereon by'prongs 41 bent overii on its inner face, F1gs. 3 and 12. 'I heen arged part of the blank is-bent to. form-a shortsegmental flange 42which fits over 'thei'sharpening member 19 atits end, where it tapers, and prongs 43 on such flange are inturned and forced into such member, 10' as shown-in Fig. 12, holdingit tightlywithin ithe inclosing part-of the'cap." That portion ofthe 'ca'p having the aperture 38 is located at, the outer face of. the head,the'shafte passmg through the aperture, and the frictiondetent 21 in the recessed face of the head 16 extends through the aperture 38 of'its cap. Said caps do awayw'ith'pins or screws to fasten the ends of the sharpening member to the heads, which would otherwise be neces-' sary owin' to the tapered form of said member at eac end of the spiralse'at in the bar of the skeleton support. The caps are readily made,-and in assembling the parts I they" can be applied to the heads quickly and, easily, thus reducing cost of construction {whileat the same time giving a desirable finishito the apparatus. f

I Various changes or modifications in different details of construction and arrangement may be made by those skilled in the art with- .out departing from the spirit-and scope of my'inventionlas set forth in the claims an; "nexd hereto. I I

Having fullydescribed my invention, what If-claim as new and desireto secure by Let ters Patent is:-. I In a blade-sharpeningdevice, a frame,

a shaft rotatably mounted therein and ha.v" I ingattached carriers, a. skeleton support 40 mountedloosely on and concentric with said shaft-and provided with an external spiral seat, a sharpening member fixed in said seat, and a lost-motion connection between" said I shaft, to rotate the former by and in unison with the latter after skeleton support and the Y he'rotation of the shaft in either direction has'begun'i'- ,4 2, In a blade-sharpening device, a frame, a shaft rotatably mounted therein and having attached carriers, a skeleton support comprising circular heads rotatably mounted on the shaft and a'spir a-l, eXternally chan-.

' neled bar rigidly connecting the heads, a sharpening member fixed in the channeled portion of the bar, and a positively acting lost-motioh connection between one of the heads and theshaft, whereby said-support remains at rest during a predetermined angular movement -o 5 change in, the direction of rotation-thereof. '3 In ablade shar'pening device, a frame,

' a shaft rotatably mounted therein and hav-. .ing attached carriers, a skeleton supportmounted loosely on and concentric with sai' 56 shaft and providedwith anexternal"-spirtifllf'theshaft after each.

d to rotate the latter,

seat, a sharpening member fixed in said seat,

a. lost-motion connectionbetween said support and the shaft, whereby the support remains at rest during a partial revolution of the shaft after each change in the direction of rotation thereof, and a friction detent co-' operating with the su dental rotation thereo 4-.1n a blade-sharp a shaft rotatably mounted therein and mg attached carriers,

port to restrain acc during a rest period. ening device, a frame,

hava skeleton support having an external spiral seat and circular heads through which the extended,- a sh'ar'peni said spiral seat, one of the shaft is loosely heads having I its outer face circularly recessed, a disk having a segmental; opening,

circular recess,

- driven into the and a radial pin on the shaftentering the'recess formed 'by'the segmental opening in the disk,

to forma lost-motion "connection between said support I and the shaft.

5. In a blade-sharp a shaft rotatably mounted therein'and ening device, a frame, hav

ing attached carriers-,a support loosely mounted onthe shaft a head provided with face thereof, a sharpening and having at one end' a circular recess in one member spirally arranged, upon the-support, adisk fitted ing a segmental o "motion connection between support.

imountedin I carr ers fixed on the shaft, one of the-'carriers having a tightly in therecess or. said head and hayp'eni-ng, and a radial P111 the segmental 0 enthe shaft and 6. In af blade sharpening device, a frame having upturned sides, I

and extended beyond the sides,

a shaft rotatably endsof the extended hub on itsinner face, an 'annular shoulder on the shaft opposite said hub, a]

' the hub and.

mounted on "is inner end, a fricti washer "clampedshoulder, Isal'd 'di'sk theprojecting ing pressed a to 'form a gear and the-shaft,-

ain'st it reverse the blade-hol member rotatedby to act upon-the face said holder.

7. Ina blade-sharp on the shaft,

I carried by the frame,

between.

portion of the gear and friction connection in'thejfr'ame'; apne I anintermediate p n on 'meshmg wit .gear and with thepi'nion on the shaft is reversed, and ashar theshaft 'and' a eta-blade mounted in I loosely mounted on'the shaft, 5 connection between said'me mber' and shaft,

a rocking gear rotatably ro ecting beyond isk and; a spring the huh-and the frictionally engaging eby the spring washer,

blade holder mounted fast 'onsaid ho der' when rotation of ening' device, a frame,

a shaft rotatablyvmounted therein, carriers a'. spiral sharpening member a lost-motion blade holder II h the the holder, to

between the 1 lder,

reversing gearing be- I with the shaft, a blade-holder, means accarriers opposite'the annular shoulder, a

tated by said shaft and adapted to act upon 40 and shaft, to operate said reversing means parallel spiral flanges onits external face, to 'orm a spiral seat, and a sharpening member fixed in the seat and extending beyond the tops of said flanges.

13. In a device for sharpening blades, a frame having parallel sides, a shaft rotatably mounted therein and attached carriers thereon outside the frame, a skeleton support loosely mounted on the shaft between the sides, a spiral'sharpening member fixed on said support, a yielding detent interposed between one side of the frame and the adjacent end of the support, to pi'event accidental rotation and longitu tween said blade-holder and shaft, includmg a pinion fixedly attached to the holder and a gear concentric with the shaft, and a friction connection between said gear and shaft, to actuate the reversing gearing by rotation of the shaft when the holder is free to rock and per. 'iitting continued rotation of the shaft when the holder prevents rotation of the gear.-

In a blade-sharpenii'igdevice,a frame, a shaft rotatably mounted therein, carriers on the shaft, a spiral sharpening member loosely mounted on the shaft, a lost-motion connection between saidmember and shaft, to rotate the latter, a rocking blade-holder carried by the frame, reversing gearing between said bl'ade-holder and shaft, including a gear loosely mounted on the shaft, and a friction connection between said gear and shaft, to rotate them in unison and operate the gearing to rock the blade-holder while permitting rotation'of the shaft when the blade-ho der prevents rotation of said gear. i

9. In a blade-sharpening device, a frame, a shaft rotatably mounted therein, and havin'g an annular shoulder near one end, carriers fast on the shaft, a hub on one of the and the support, a blade-holder carried by the frame, reversing means for sald holder, and a friction connection between said means and the shaft, to effect reversal of the tion of said shaft is reversed.

14. A. support comprising parallel, circular heads, a bar rigidly connecting them and having an external, spiral seat, a sharpening member mounted in the seat, and retaining caps having flanges to embrace the heads and engaging the ends of the sharpening member, to retain the same in place.

15A support comprising parallel,'circular heads, a spiral bar rigidly connecting them and having an external seat, a sharpening member fixed in the seat and retaining caps mounted on the heads, each cap having a fixedly engaging the adjacent end of the sharpening member to retain it securely in the seat.

16. A support comprising parallel, circular hea'ds, a spiral bar rigidly connecting them'and having an external seat, a sharpgear loose on the hub and projecting beyond its inner end, a friction disk and a spring washer clamped between said hub and shoulder, the disk being pressed by said spring washer against the projecting portion of the gear, to frictionally connect the latter tuated by rotation of the gear to reverse said holder, and a sharpening member rofirst one and then the other face of a blade mounted in the holder.

10. In a blade-sharpening device, a frame, a blade-holder mounted to rock thereon, an actuating shaft rotated by bodily movement of the frame, reversing means for the bladeholder. including a gear loose on the shaft,

and a friction connection between said gear ing caps mounted on the heads, each cap having a segmental flange overlapping the the sharpening member and provided with inturned prongs entering the same.

17. A support comprising parallel, circular heads, a spiral bar rigidly connecting them and having an external seat, a sharpening member fixed in the seat. and circularly flanged retaining caps tightly fitting over the heads, each cap having a .pronged portion overlapping the adjacent end of the sharpening member, with the prongs in'- turned to penetrate said member.

18. In a device of the class described, a blade-holder comprising a rocking shaft, opposed locking disks thereon to engage the ends of a blade and retain it in the holder, a sleeve on the shaft between said disks, a central collar on thesleeve, aving a radial seat to receive loosely the back of theblade, and a set-screw in said collar fixedly cons whenever the rotation of the shaft is .reversed. said friction connection comprising a friction disk'and a washer-like spring fast on the shaft, the disk being held in frictional engagement with the gear by said spring. v 11. A support for the sharpening member of a razor-sharpening device, comprising a spirally twisted rigid bar having external and radially-extended flanges to form a spiral seat, and parallel, circular heads fix edly connected by said bar and centrally ap'ertured.

.12. A skeleton support comprising'parallel circular heads, a spiral connecting member rigidly attached thereto and having position of the blade-holder when the rota-' portion thereof overhanging and ening member fixed in the seat, and retain :15",position-theother disk with its hub against means to limit-ontwai'd, 'niovement oisaid disk, an" opposed;- Pring-Qontrolled locking disk longitudinally movable on the shaft, to engage "the eniit" =eb1ade and retain it in 25 .the ho1de1i,"a"s1eeve on the shaft between 1 said disks, to limit inward movement of the spring eont'ro led disk, -and- 'toprevent inward movement of the other disk, whereby -the latter is fixed in position on the shaft, a .50 collar: on the sleeve between said disks and having afadial seat to .receive the back of the bladegfland'meens common to both the collar and. the sleeve to'held them in fixed position on the shaft.

In testimony whereof, I have signed my name to this specification, in the 'presence of two subscribing witnesses.

RICHARD T, wINN;

neetin-ig, it; with f the -smme end-fipassing the- 1'ette1' tobeaf ilpointhefshaft "thefebyj secure the sleeve upon'the shaft. 1m a ;device'i of the" cless'deseribed, a (as-holder comprising. .af rocking shaft, 'osed locking disks havin outwardly ex-. d hjibs-Iooseon'the she apinion fixed endj bf-Ttheshiftg-edjacent vthe outer I said";hubs,.ei' chambered nut Iomfike the? other end'of the shaft, to re *"cei eoth i en hilh'espringwithinvthe nut ectingi ngeinst said hub, 'a sleeve fiized on fthe} shaft between the disks,"to limit springindficed inward movement of one disk and to the pinion and a coilai" on the shaftbetween said disks, having a radial seat for the back of the blade. e ,I 20. In a device of the classdescribed, a 2 qblade holder' compi'ising a-rocking shaft, a locking disk mountedloosely on said shaft. r i

' Witnesses-i I J OHN O. EDWARDS,"

FRED RICK S. GREENLEAF. 

